?
Streaming Dynamic Model Of Regional Production System
P. 939–946.
Granitsa Y.V
The purpose of the study is to assess the state and dynamics of the region's development. The research object is the production sphere of the Central Federal District - the leader in Russia in terms of socio-economic indicators. Modeling the state of the production system was carried out using stream models of economic dynamics. At the first stage, the state of the system in 2010 and 2018 was analyzed. Attempts to find equilibrium in the system under study did not yield results - the system had no solutions. The equilibrium state does not occur for any values of the parameters and phase variables. At the second stage, the dynamic development of the production system was simulated by numerical methods, graphs of the change in phase variables in time for two cases were built - the parameters of the system remain unchanged and change over time. As a result, we concluded that over time, economic agents become richer - the amount of money grows both among organizations and the population. However, the pace of production remains unchanged. The volume of shipped goods of own production decreases by increasing the number of imported goods in national markets and the rapid development of the financial sector during the period under review, stimulating the inflow of additional funds from enterprises and the population. Thus, financial flows do not remain in the production system and do not contribute to production growth, but flow into another institutional structure.
In book
European Proceedings of Social and Behavioural Sciences EpSBS, 2021.
Vladimir E. Antonov, Materials Chemistry and Physics 2025 Vol. 332 Article 130232
Multilayer graphane (hydride of graphite) is a crystalline hydrocarbon of composition CH, which can be synthesized
from graphite and molecular hydrogen at pressures above 2 GPa [V.E. Antonov et al. Carbon 100 (2016)
465]. Using X-ray diffraction, this compound was tentatively identified as the “graphane II” phase of 3D-graphane
predicted by ab initio calculations [X.-D. Wen et al. ...
Added: March 26, 2026
A. S. Baybar, M. Yu. Puzachenko, R. B. Sandlersky, Geography and Natural Resources 2025 Vol. 46 No. S1 P. S15–S22
This article presents a methodology for landscape mapping based on the integration of long-term series of multispectral data and morphometric characteristics of the relief for various hierarchical levels. Using the example of the Central Forest Reserve and its adjacent territory, where both indigenous and anthropogenically modified geosystems are combined, it is shown that the identification ...
Added: January 14, 2026
Springer, 2023.
This book constitutes the refereed proceedings of the 14th International Conference on Advances in Optimization and Applications, OPTIMA 2023, held in Petrovac, Montenegro, during September 18–22, 2023.
The 21 full papers included in this book were carefully reviewed and selected from 68 submissions. They were organized in topical sections as follows: mathematical programming; global optimization; continuous optimization; ...
Added: December 9, 2023
Boykov I., Boykova A., Potapov A. et al., , in: 14th Chaotic Modeling and Simulation International Conference.: Springer, 2022. Ch. 7 P. 81–95.
The paper consists of three parts. The first one is devoted to approximate methods for evaluating Riemann integrals, singular and hypersingular integrals on closed non-rectifiable curves and fractals in the complex plane. An integral on non-rectifiable curves or fractals is defined as a double integral over a region that bounded by a non-rectifiable curve or ...
Added: January 15, 2023
Bugaev K. A., Yakovenko N. S., Oliinyk P. V. et al., Physica Scripta 2021 Vol. 96 No. 12 Article 125302
An analytical formula that accurately accounts for the Lorentz contraction of the excluded volume of two relativistic hadrons with hard-core repulsion is worked out. Using the obtained expression we heuristically derive the equation of state of Boltzmann particles with relativistic excluded volumes in terms of system pressure and its surface and curvature tension coefficients. The ...
Added: January 12, 2023
Springer, 2022.
This book constitutes selected and revised papers from the 22nd International Conference on Mathematical Modeling and Supercomputer Technologies, MMST 2022, held in Nizhny Novgorod, Russia, in November 2022.
The 20 full papers and 5 short papers presented in the volume were thoroughly reviewed and selected from the 48 submissions. They are organized in topical secions on computational methods ...
Added: December 26, 2022
Springer, 2022.
This book constitutes the refereed proceedings of the 16th International Conference on Parallel Computational Technologies, PCT 2022, held in Dubna, Russia, during March 29–31, 2022.
The 22 full papers included in this book were carefully reviewed and selected from 60 submissions. They were organized in topical sections as follows: high performance architectures, tools and technologies; parallel ...
Added: August 10, 2022
Switzerland: Springer, 2021.
This book constitutes the refereed proceedings of the 12th International Conference on Optimization and Applications, OPTIMA 2021, held in Petrovac, Montenegro, in September-October 2021.
The 22 full and 3 short papers presented were carefully reviewed and selected from 63 submissions. The papers are organized into the following topical sub-headings: mathematical programming, global optimization, discrete and combinatorial ...
Added: November 4, 2021
Azhmyakov V., Fernández-Gutiérrez J. P., Pickl S., Italian Journal of Pure and Applied Mathematics 2017 Vol. 2017 No. 38 P. 653–670
Our paper discusses a novel computational approach to the extended Maximal Covering Location Problem (MCLP). We consider a fuzzy-type formulation of the generic MCLP and develop the necessary theoretical and numerical aspects of the proposed Separation Method (SM). A speciffic structure of the originally given MCLP makes it possible to reduce it to two auxiliary ...
Added: October 30, 2021
Azhmyakov V., Trujillo L. A., Italian Journal of Pure and Applied Mathematics 2017 Vol. 2017 No. 37 P. 219–237
This paper deals with a constrained LQ-type optimal control problem (OCP) in the presence of fixed levels input restrictions. We consider control processes governed by linear differential equations with a priori known control switching structure. The set of admissible inputs reflects some important natural engineering applications and moreover, can also be interpreted as a result ...
Added: October 30, 2021
Kondratyev I., Moiseenko S. G., Бисноватый-Коган Г. С. et al., Monthly Notices of the Royal Astronomical Society 2020 Vol. 497 No. 3 P. 2883–2892
Determination of a magnetic field structure on a neutron star (NS) surface is an important problem of a modern astrophysics. In a presence of strong magnetic fields, a thermal conductivity of a degenerate matter is anisotropic. In this paper, we present 3D anisotropic heat transfer simulations in outer layers of magnetized NSs, and construct synthetic ...
Added: October 14, 2021
Cham: Springer, 2021.
This book constitutes the proceedings of the 20th International Conference on Mathematical Optimization Theory and Operations Research, MOTOR 2021, held in Irkutsk, Russia, in July 2021.
The 29 full papers and 1 short paper presented in this volume were carefully reviewed and selected from 102 submissions. Additionally, 2 full invited papers are presented in the volume. ...
Added: July 8, 2021
Switzerland: Springer, 2020.
This book constitutes the refereed post-conference proceedings of the 6th Russian Supercomputing Days, RuSCDays 2020, held in Moscow, Russia, in September 2020.*
The 51 revised full and 4 revised short papers presented were carefully reviewed and selected from 106 submissions. The papers are organized in the following topical sections: parallel algorithms; supercomputer simulation; HPC, BigData, AI: ...
Added: December 10, 2020
Ofengeim D., Physical Review D - Particles, Fields, Gravitation and Cosmology 2020 Vol. 101 No. 10 P. 103029
I have demonstrated the existence of a tight correlation between the mass, radius, central density, and pressure of maximum-mass neutron stars modeled using diverse baryonic equations of state. A possible explanation for these correlations is provided. Simple analytic forms of such correlations are suggested and compared with observational constraints on the maximum mass of neutron ...
Added: November 11, 2020
Springer, 2020.
This edited volume gathers selected, peer-reviewed contributions presented at the fourth International Conference on Differential & Difference Equations Applications (ICDDEA), which was held in Lisbon, Portugal, in July 2019.
First organized in 2011, the ICDDEA conferences bring together mathematicians from various countries in order to promote cooperation in the field, with a particular focus on applications. ...
Added: November 1, 2020
Norman G., Saitov I., Sartan R., Journal of Physics: Conference Series 2019 Vol. 1147 No. 012003 P. 1–6
The warm dense hydrogen is studied by means of the ab initio molecular dynamics
simulation in the region of fluid–fluid phase transition. The metastable states of two isotherm
of 700 and 1000 K are calculated. The metastable ranges by pressure are 470 and 320 kbar
respectively. The existence of metastability is a strong criterion that the transition is ...
Added: October 30, 2019
Norman G., Saitov I., Sartan R., Contributions to Plasma Physics 2019 Vol. 59 No. 6 P. e201800173
Warm dense hydrogen is studied in the region of fluid–fluid phase transition within
the framework of the density functional theory. We report a procedure of obtaining
metastable states and calculate the equation of state. Metastable states are diagnosed by pair correlation functions and values of conductivity. We obtain a strong
overlapping through the density of metastable and equilibrium ...
Added: October 30, 2019
Cham: Springer, 2018.
This book constitutes the refereed proceedings of the 12th International Conference on Parallel Computational Technologies, PCT 2018, held in Rostov-on-Don, Russia, in April 2018.
The 24 revised full papers presented were carefully reviewed and selected from 167 submissions. The papers are organized in topical sections on high performance architectures, tools and technologies; parallel numerical algorithms; supercomputer simulation. ...
Added: March 11, 2019
Гурарий М. М., Жаров М. М., Русаков С. Г. et al., Наноиндустрия 2018 № 82 С. 410–411
The paper considers the problems of envelope following method construction for determining transient response and steady state of integrated circuits. The envelope following algorithms based on using one-step high order integration methods have been offered. ...
Added: February 12, 2019
Nikitin A. A., Savost’yanov Anton Sergeevich, Moscow University Computational Mathematics and Cybernetics 2017 Vol. 41 No. 3 P. 122–129
The two-species model of self-structured stationary biological communities proposed by U. Dieckmann and R. Law is considered. A way of investigating the system of integro-differential equations describing the model equilibrium is developed, nontrivial stationary points are found, and constraints on the model parameter space resulting in similar stationary points are studied. The results are applied ...
Added: September 3, 2018
Norman G., Saitov I., Доклады Российской академии наук. Физика, технические науки (ранее - Доклады Академии Наук. Физика) 2017 Т. 474 № 6 С. 687–691
The density functional theory is used to calculate the equation of state and the proton-proton pair correlation functions in the range of hydrogen temperatures and densities where the fluid-fluid-phase transition is expected. The metastable states are considered. The critical temperature has been estimated to be ~4000 K. We propose a two-step mechanism: the partial ionization ...
Added: December 2, 2017